Controlling device for internal-combustion engines.



BL P. ROBINSON.

CONTROLLING DEVICE FOR INTERNAL COMBUSTION ENGINES. APPLIOATION FILED MAR. 9, 190a.

1,0593317. Patented p 15, 1913.

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EDWARD r. nonmson,

0F MAIDEN, MASSACHUSETTS, ASSIGNOR TO REVERSIBLEGAS- ENGINE COMPANY, ACORIPORATION 0F MAINE.

CONTROLLING DEVICE FOBINTERNAL-COMBUSTTON ENGINES.

Specification of Letters Patent.

Patented Apr. 15, 1913.

Application filed March 9, 1908. Serial No. 420,000.

the accompanying drawings, is a specification, like letters on the drawings represent- 1ng like parts- The present invention relates to a controlling device for internal combustion engines,

and is embodied in means for controlling a .multi-cylinder engine by separately varying the intake of the several cylinders. The controlling device may be used in addition to the ordinary throttle control at the our bureter, or it may be utilized .as the only control forthe engine, the purpose of the invention being to maintain one or more cylinders at substantially full capacity and cutting the capacity-of one or I110l6 0bl161 cylinders down to substantially nothing. It is not intended, however, to completely shut oil the idle cylinders, the device being preterably provided with means whereby sufficient charge is admitted to every cylinder to counteract the compressionload and piston resistance.

In. accordance with the invention, the sev eral cylinders are provided with separate intake pipes all of which are supplied from a common source such as a carbureter which may, if desired, be provided with a throttle of the kind commonly 'used. The several intake pipes are provided withseparatc controlling valves which may be, and preferably are operated by a common actuating member so as to be operated simultaneously. In

this arrangement the valves are so related to the actuating member that a movement thereof in one direction willsucccssively cut oil or reduce the capacity of the intake pipes of the cylinders, all of the intake pipes being open to their fullest capacity when the valve is in its normal position.

Figure 1 is an elevation of an explosive enginoshowing the controlling device embodying the invent-ion applied thereto, the said device being shown in vertical section; Fig. 2 is avertical section on the line of Fig. 1; and Fig. 3 is a similar view showin the valve in a different position.

, he invention is herein shown as embodied" in:a three cylinder engine, it being obvious that an engine having any number of cylinders more than one may be rovided with a controlling device of the kind described.

The cylinders a, b and a are provided with separate intake pipes a 1) and c which receive the explosive mixture from a chamber d supplied from any suitable source through an intake pipe 03 t It is obviously not essential that the common intake should be in the form of a chambeiybut this is a convenient construction, as the said chamber may also be utilized to afford a casing for the valves which separately control the intake pipes (1 b and 0 In the construction shown, the several valve openings are formed in a single member 6 shown as a slide,,longitudinally movable in the chamber d, as by a rod 6' which extends out.fr0m the chamberthrough a stufiing box c to keep the chamber gas-tight.

The several 'alves are in. the form of openings 6*, e and c which are of difi'erent sizes and arranged so that when the slide e in the position shown in Fig. 2, all of the intake passagesleadiiig to the several cylinders :are wide open. The valve openings c and e",however, are larger in area thanthe opening a, the arrangement being such that the opening 0* will be moved out of alinement with the intake pipe (P, so as to close or partially close the said pipe while the openings and c are still in alinement with the pipes b and c This is indicated in Fig. 3 in which the slide is in its intermediate position, and it will be seen that a further movement of the slide a will. also cut oil the intake pipe b, leaving the cylinder 1: alone fully supplied with the. explosivc mixture.

in order to admit sufiicicnt'gas to all the cylinders under all conditions, to ignite and create sullicient expansion to overcome the load due to compression and friction, the valve openings 0" and c are provided with extensions in the form of narrow slots 0*", and 0", out in the slide e, so that a certain amount of gas is admitted to the intake pipes through the slots regardless of the position of the slide a.

While this controlling valve may be used as the sole means for controlling a multicylinder engine, it is especially adapted for use as a supplemental control to be'used in conjunction with a single throttle control .lingthe main supply through the main intake pipe d By this construction, the main throttle can be kept Wide open if, for any reason, it is desirable to do so, and the cylinders throttled substantially to a cut-off point by the supplemental controlling valve 6.

aims. v v

1. In a multi-cylinder internal combustion engine, an intake pipe common to all the cylinders; separate intake passages supplied from said intake pipe, said intake passages leading to the several cylinders respectively; and a throttle valve common to all the said passages adapted by a continuous movement in one direction to throttle said passages successively Without Wholly closing any of them.

2. The combination with the several cylinders ofa multi-cylinder internal combustion engine;,of an intake pipe common to all the cylinders; separate intake passages leading from said pipe to said cylinders, re-

I spectively; and, a slide valve-controlling all. I the said intake passages, said valve having different sized apertures one for each passage, whereby a continuous movement of the valve in one direction successively varies the capacity of said intake pipes, respecs tively.

3. In a 'multi-cylinder engine the combiplpes leading nation with" separate intake to the several cylinders; of a slide valve m0vable across said intake pipes and-provided with openings differing in length; and narrow slots projecti g beyond the openings, substantially as and for the purpose described.

In testimony whereof, I, have signed my name to this specification in the presence of two subscribing Witnesses.

, EDWARD P. ROBINSON.

Witnesses:

- JAMES J. MALONEY,

E. CovENEY.

Copies of this patent may be obtained for'five cents each, by addressing the Commissioner of Patents, Washington, 1). c. 

